¿Habéis visto mis gafas?Have you seen my glasses?Haber + participio. This is a form we use to express an action in the past very close to the present time. The verb HABER has different forms, which are: HE, HAS, HA, HEMOS, HABIS, HAN. But the participle doesn’t change for all the verb. So, for the verb VER, the participle is irregular and is VISTO. In the dialogue there are more examples like: he mirado, has puesto, ha sido.Other regular participles are formed like this; when the verb ends in AR, participle ends in ADO like HABLAR –HABLADO. When the verb ends in ER/ IR, participle ends in IDO like BEBER– BEBIDO or SALIR –SALIDO.